Setting this bit in the clock enable register will stop the clock when the card is in the IDLE state. Signed-off-by: Will Newton <will.newton@xxxxxxxxxx> --- drivers/mmc/host/dw_mmc.c | 3 ++- 1 files changed, 2 insertions(+), 1 deletions(-) diff --git a/drivers/mmc/host/dw_mmc.c b/drivers/mmc/host/dw_mmc.c index 0b0bedd..4cf560d 100644 --- a/drivers/mmc/host/dw_mmc.c +++ b/drivers/mmc/host/dw_mmc.c @@ -562,7 +562,8 @@ static void dw_mci_setup_bus(struct dw_mci_slot *slot) SDMMC_CMD_UPD_CLK | SDMMC_CMD_PRV_DAT_WAIT, 0); /* enable clock */ - mci_writel(host, CLKENA, SDMMC_CLKEN_ENABLE); + mci_writel(host, CLKENA, SDMMC_CLKEN_ENABLE | + SDMMC_CLKEN_LOW_PWR); /* inform CIU */ mci_send_cmd(slot, -- 1.7.3.4
From af54e39992a23a5b6b6c853fede652b1df3be37f Mon Sep 17 00:00:00 2001 From: Will Newton <will.newton@xxxxxxxxxx> Date: Thu, 3 Feb 2011 12:18:44 +0000 Subject: [PATCH 2/2] dw_mmc: Enable low-power mode for the card clock. Setting this bit in the clock enable register will stop the clock when the card is in the IDLE state. Signed-off-by: Will Newton <will.newton@xxxxxxxxxx> --- drivers/mmc/host/dw_mmc.c | 3 ++- 1 files changed, 2 insertions(+), 1 deletions(-) diff --git a/drivers/mmc/host/dw_mmc.c b/drivers/mmc/host/dw_mmc.c index 0b0bedd..4cf560d 100644 --- a/drivers/mmc/host/dw_mmc.c +++ b/drivers/mmc/host/dw_mmc.c @@ -562,7 +562,8 @@ static void dw_mci_setup_bus(struct dw_mci_slot *slot) SDMMC_CMD_UPD_CLK | SDMMC_CMD_PRV_DAT_WAIT, 0); /* enable clock */ - mci_writel(host, CLKENA, SDMMC_CLKEN_ENABLE); + mci_writel(host, CLKENA, SDMMC_CLKEN_ENABLE | + SDMMC_CLKEN_LOW_PWR); /* inform CIU */ mci_send_cmd(slot, -- 1.7.3.4
